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One of the newer aspects inDOOM: The Dark Agesis that levels are fully explorable. While the shooter still retains the same classic linear gameplay, you’re able to now freely move around large maps to find hidden secrets. The Forsaken Plains (which is the tenth level) in DOOM: The Dark Ages employs this feature quite well.
There are tons of nooks and crannies to explore, all of which will reward you with tools to defend yourself better. However, it is a large space, which means you could potentially get lost looking for every secret and collectible. To easily get 100 percent in The Forsaken Plains, use this guide.

All Secrets And Collectibles In The Forsaken Plains
On top of destroyingtwo Hell Cannons, here’s what you’ll be looking for:
Mission Challenges
There are a total ofthree challengesyou should complete since they yield gold and other rewards, such as weapon skins. But, to have 100 percent of this level done, you must get atotal of 230 gold.So, these challenges will be important.
Mission Challenge 1: Rocket Man
To complete this challenge, you need theRocket Launcherthat you will get just after the start of the level. To achieve this challenge, damagefive or more demons with one shotfrom the Rocket Launcher.
Mission Challenge 2: Exterminator
Simply put,defeat and destroy up to two Gore Nests. This challenge can help you attain more gold on top of the rewards you get, so it would be a smart idea to complete this one as you work your way through The Forsaken Plains.
Mission Challenge 3: Fault Line
Hit 25 demons with the Ground Fissure Shield Rune. You get runes in thelatter half of Chapter Nine. The good thing about this rune is that it can impact many enemies at once, resulting in getting all 25 demons easily.
Life Sigil 1
This is going to be the first item and the first Life Sigil you collect. You can obtain this Life Sigil right after the first bunch of enemies.
Instead of going straight towards the massive door,turn left. When you look up, in the distance, there will be aplace to throw your shield, allowing you to dash towards it. Once you land,collect all the goldon the first platform.

Areas labeled a Secret Area will count towards the ten Secrets found. So, most of the areas you go to for this guide will be considered Secret Areas.
Afterward,turn around to see another slightly higher platform. Jump onto it, and there will begold along with the first Life Sigilwaiting to be collected.

Purple Key
As soon as you get past the first large doors, you’ll enter a small hallway leading to another set of doors that will open when you approach them. This will lead you to an open space with an Atlan in front.
You’ll also be greeted by numerous enemies that vary in size. Once they’re all dealt with, headleft from the doorsyou came from.

If you stay on the straight path, it’ll take you to a doorrequiring the Purple Key.
To the left of the gateis a spot where you canthrow the shield and jump to. When you get to the top,follow the path, but turnimmediately right. There will be armor pick-ups in this section.

As you reach the ledge,look right, and you’ll see a piece of metalthat’s Superheated.Throw your shield at itto break the Superheated Metal. When you bring it down,fire will come out of the wallsin the hallway you were just in.
Head back into that hallwayand turn right while collecting all the gold. Go to theother side of the hallway while dodging the fireto reach a small opening. In the opening,look left at the climbable wall.

Jump up the wall, and then make ahard right turn into a new hallway. At the end of this area, there will be aGold Chestto earn.
Again,turn around, and go to the opposite sideof the same hallwaybeyond the wall you climbed up. From there,head left. This will take you across asmall bridgeinto a room with thefloor destroyed.Jump down this hole, and you’ll be able to obtainthe Purple Key.

With the key in hand, the gatein front will open, allowing you to leave. However,enemies spawn, forcing you to fight them off.
Ruby 1
To get the first Ruby, you have to completea Secret Area first. From the spot where you got the Purple Key, head back the way you came fromand cross the bridge. However,look to your rightonce you get to the other side of the bridge.
There will be a door that you may access with the Purple Keyguarded by shielded enemies. After all the enemies near the door are gone, you can head into the Secret Area. When you do, you’ll see aRuby on the rightof the door that can’t be accessed.

To unlock the Ruby, head into the Secret Area andenable the first Gore Nest. This triggers a fight with acouple of wavesof enemies.
The Secret Room can be a great area to get the Fault Line challenge, since most enemies will make you parry, resulting in the Ground Fissure Rune starting to work. On top of that, it counts towards the Exterminator challenge too.

Once you’ve beaten them,leave the Secret Area, and the Ruby will be accessible.
Cyberdemon Toy
When you leave that Secret Room,turn left. You should see afloating platformwith a portal. Navigate to that platform. There will be ajump padthat will get you to the lone platform. Once there,walk into the large question markto get the toy.
Afterward,walk into the portalto get sent back to the mainland.
Life Sigil 2
The portal should take youin front of the Secret Room. When it does, head to the path goingunder the bridgeyou were initially on. However,just before going under the bridge, turn left.
Follow thesingular path till it bends to the right. You’ll be able toclimb a small ledgethat will lead you to a narrow hallway. Upon entering said hallway,there will be Arachnotronsand fireballs shooting from the walls.

When the Arachnotron is down, use your shield to break the Superheated Metalon the other side of the hallway. This opens a door to a new area.
Navigate towards the marker, which takes you to a slightly bigger room. In the open space,make your way left to a climbable wall.At the top, turn around andlook upwards to throw your shield, allowing you to dash towards it.
From here, you cancollect the second Life Sigil.
Health Demonic Essence
By dropping from the Health Sigil’s sport and moving towards the story marker, you’ll enter a massive area with tons of enemies roaming around.
As soon as you step foot in this location, you’ll need todefeat a Leaderwho holds the Health Essence. To do so, bring down its shield byslaying enemies around it. When you defeat larger enemies,bigger chunks of the shieldwill go away.
So, attempt to change who you fight as the battle progresses.
Once the Leader is stunned, you can beat it bydoing a Glory Kill. It’ll award you with the Health Essence.
It’s recommended to complete the Rocket Man challenge in this spot due to the high number of enemies descending on you.
First Hell Cannon
Now, you may bringdown the first Hell Cannonafter you walk into the main tower and use the jump pad to access it.
Simplyshield bashinto it to bring it down.
There’s another Gold Chest that you can reach from thejump pad in front of the tower. This one is harder to miss since you can see it from a distance.
Ruby 2
In the same location where you fought for the Health Essence,head back the way you came from. However, go left to another Secret Door. Follow the path that takes you to a large room. Here, you’ll be fighting a handful of enemies and avoiding fire.
There will belarge amounts of goldon the ground as well, so make sure to collect everything in this room.
When you’ve gotten past them, go to thenorth side of the room. You should see a gate withSuperheated Metal and the second Ruby on its left. Collect the Ruby and break down the Super Heated to exit.
Be warned, as soon as you take the Ruby and leave —you’ll be attacked.
Codex Entry 1
Now, head back to the openingarea where the Atlan is.Look for a set of stairs. They should beon the rightif you’re coming from where thefirst Hell Cannons were.
Make your way up those stairs to access another Secret Door. Once open,collect all the gold on the path. At the end of this path, you’ll find thefirst Codex.
Afterward, you canexit out the doorthat is next to the Codex.
Ruby 3
On theright side of the Atlan, head up the path andclimb the wall. However, as you reach the top,turn right. You’ll enter a roomwith a Sentinel Shrinein it. To access the Shrine,deal with the enemies first.
When everything is clear,go right from the entrance. There will be an elevator-like platform you can use. Be careful of thefire as well. At thetop of the elevatorwill be the final Ruby.
Codex Entry 2
Jump down from where the Ruby is, and head right. As you exit,turn right and collect the goldon the ground. At the end of this gold-riddled pathwill be the second Codex.
You can also walk across to where a gate isto collect more gold.
The gate will open,but head back the way you came from, since the next collectible is in that direction.
Armor Demonic Essence
From the room that has the Sentinel Shrine in it,exit and head right. This will take you to another large area where you need to defeatanother Leaderto get the Armor Essence. This Leader is the heavier version of the Mancubus.
You can easily down it by using theRocket Launcher, Super Shotgun, or the Cycler.
Second Hell Cannon
Once you beat this mini-boss, you can head into the tower and take out the second Hell Cannon thesame way you did for the first one.
There will also be a small cut scene that shows theopening of the final areawhere you’ll wind up. However, there are still a couple more collectibles you need to pick up if you’re following the order of this guide.
Ammo Demonic Essence, And Gore Nest
Both of these things are in the same spot, which makes them easy to find.
Once the second cannon is gone, you’ll end up at the base of the tower. From there, head right and make your way up the wall. This goes to another area with another wall. When you get past these obstacles, interact with the Gore Nest at thefar right of this area. This triggers a fight witha Revenant Leaderas well as additional forces.
The best way to deal with a Revenant is toparry its shotsto stun it quickly.
Weapon Skin
Acquiring this skin after facing an onslaught of enemies is the rewarding part. In the same spot where the Gore Nest was, look for an opening that’s thefarthest away from the wall you climbed up. If you see alaunch pad, you’re in the right spot.
However, don’t use the launch pad;simply drop below. As soon as you land,turn around, and you’ll see a hidden path. Follow it till you seea large question mark. By walking into it, you’ll gain theNightmare skinfor the Cycler weapon.
Once you have the skin, drop and head to a room that’sleft of the ledge. This room will have a lotof gold to collect. However, be warned,large Tentacles come out of the ground.A couple of shots from your Shotgunwill keep them at bay.
You can shield bash the exit point in the back of the room to make it easier to get to the Atlan.
Life Sigil 3 And Wraithstone
These items arealmost next to each other, so getting them both at this point would be the ideal thing to do.
Life Sigil
To get the final Life Sigil, head in theopposite directionto the room with the gold in it. You’ll enter an areawith a Sentinel Shrine.
If you go into theditch behind the Shrineand walk in the onlyaccessible direction, you’ll reach thelast Health Sigil.
Wraithstone
The Wraithstone is in the area next to where the Sentinel Shrine is,and it should already be open. As soon as you enter, you’ll need to deal with more enemies. Once they go down, you can find the Wraithstone on thesouth sideof the battlefield.
The only issue is thatyou can’t access it.
To remedy this, you need to obtainthe Atlan Core,which isdirectly in frontof the stone.
It’ll have a marker on it. Once that’s done,you’re able to take the Wraithstone.
Final Touches
Headback to the roomwith the gold in it. If you haven’t used your shield tobreak down the door, this would be a good time to do so. After you make it past the barrier, you’ll be greeted withone final wave of enemies.
When they’re all gone,walk up the Altan’s left side, which will take you to its shoulder. As you approach its neck, you will bebehind the titan.
Drop into the room belowand collect all the armor pick-ups. On theother side of the roomwill be thelast Gold Chest.
Finally,turn around and climb up the wall. From there, you can exit the level byentering the Atlan.